Hypnotize is the fifth album by System of a Down and the second half of the Mezmerize/Hypnotizedouble album before taking their hiatus to work on their individual solo projects. It was released on November 22, 2005, six months after the release of companion album Mezmerize.

On the outro of the track "Lonely Day", the sound of a bomb dropping is heard. This sound is also heard multiple times in "Soldier Side" and at the outro of the song "Soldier Side - Intro" on their previous album "Mezmerize".